1209: 5af1: add ButterStick bootloader

ButterStick is a OSHW ECP5 based FPGA development board.
A soft-cpu, LUNA and TinyUSB are used to create a USB DFU bootloader.

Author: gregdavill

1209/5AF1/index.md

@@ -0,0 +1,9 @@
+---
+layout: pid
+title: ButterStick DFU Bootloader
+owner: GoodStuffDepartment
+license: CERN OHL v1.2, BSD-2-Clause
+site: https://github.com/butterstick-fpga
+source: https://github.com/butterstick-fpga/butterstick-hardware
+---
+ButterStick is a compact ECP5 FPGA development board with DDR3L, High-speed USB,Gigabit ethernet, and SYZYGY interfaces